31320313202003 has 12 divisors (see below), whose sum is σ = 36433959887952. Its totient is φ = 26845889782320.

The previous prime is 31320313201973. The next prime is 31320313202023. The reversal of 31320313202003 is 30020231302313.

It is not a de Polignac number, because 31320313202003 - 2⁸ = 31320313201747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31320313202003.

It is not an unprimeable number, because it can be changed into a prime (31320313202023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15795626 + ... + 17667552.

It is an arithmetic number, because the mean of its divisors is an integer number (3036163323996).

Almost surely, 2^{31320313202003} is an apocalyptic number.

31320313202003 is a deficient number, since it is larger than the sum of its proper divisors (5113646685949).

31320313202003 is a wasteful number, since it uses less digits than its factorization.

31320313202003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213402 (or 2213395 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31320313202003 its reverse (30020231302313), we get a palindrome (61340544504316).

The spelling of 31320313202003 in words is "thirty-one trillion, three hundred twenty billion, three hundred thirteen million, two hundred two thousand, three".